I love Japanese Soba and one of my favorite recipes is that called Tsukimi Soba. Tsukimi soba is hot buckwheat noodles with a raw egg topping. Tsukimi means moon viewing in Japanese. Since the egg resembles the full moon, these kinds of noodle dishes with egg toppings are called "tsukimi."

Here is the recipe for you to try and it is fairly easy and the ingredients can be quickly found in any Japanese food store :)

Preparation:Heat dashi, soy sauce, mirin, and salt in a large pot to make soup. Boil soba noodles in another pot, according to the cooking instructions indicated in the packages. Serve soba noodles into four bowls. Pour hot soup over soba noodles. Crack an egg on top of the noodles in each bowl. Sprinkle negi on top of noodles.

Here is a video presentation I found that also shows how Tsukimi Soba is made: